I know this is probably much simplier than I am making but I need some help please. I have a data file that contains a value on the first line between double quotes ("00043"). I need to assign the value between the first set quotes to a variable in my perl script for comparison analysis. Also,... (6 Replies)
Hi Guys,
I'm a Perl newbie and was wondering if there's a way of displaying
double quotes within double quotes.
I'm try to print the contents of the variable to a file by using the system function.
Here is an example of my code:
#==============================
$website = <STDIN>;... (2 Replies)
I'm not very familiar with the ssh command. When I tried to set a variable and then echo its value on a remote machine via ssh, I found a problem. For example,
$ ITSME=itsme
$ ssh xxx.xxxx.xxx.xxx "ITSME=itsyou; echo $ITSME"
itsme
$ ssh xxx.xxxx.xxx.xxx 'ITSME=itsyou; echo $ITSME'
itsyou
$... (3 Replies)
Hi guys, I have a sed line in double quotes which works fine, but I want it to be in single quotes
here is the sed line
sed "/abc_def/s/\'.*\'/\'\${abc_def}\'/"
can some one give the equivalent to the above script in single quotes
Thanks a ton (5 Replies)
I need to echo a string that has double quotes in a Perl script.
#!/usr/bin/env perl
`echo Rule123 -comment \"blah blah\" >> $filename`
I'd like to get below appended to $filename:
Rule 123 -comment "blah blah"
But instead, the double quotes are lost:
Rule 123 -comment blah bah
... (1 Reply)
Hi,
I have string like this:
$str=' DNA OR ("rna AND binding AND protein")';
I just wanted to substitute AND with a blank. How can i do that?
I want the output like this:
$string= DNA OR ("rna binding protein") (3 Replies)
Unix superusers,
I am new to unix but would like to learn more about grep. I am very familiar with regular expressions as i have used them for searching text files in windows based text editors. Since I am not very familiar with Unix, I dont understand when one should use GREP with the... (2 Replies)
Hi,
I have an input file like this
$ cat infile
hi,i,"am , sam", y
hello ,good, morning
abcd, " ef, gh " ,ij
no, "good,morning", yes, "good , afternoon"
from this file I have to split the fields on basis of comma"," however, I the data present inside double qoutes should be treated as... (3 Replies)
Hi,
Trying to change the prompt. I have the following code.
export PS1='
<${USER}@`hostname -s`>$ '
The hostname is not displayed
<abc@`hostname -s`>$ uname -a
AIX xyz 1 6 00F736154C00
<adcwl4h@`hostname -s`>$
If I use double quotes, then the hostname is printed properly but... (3 Replies)
Hi All,
I'm unable to load the data using sql loader where there are double quotes within the double quotes As these are optionally enclosed by double quotes.
Sample Data :
"221100",138.00,"D","0019/1477","44012075","49938","49938/15043000","Television - 22" Refurbished - Airwave","Supply... (6 Replies)
Discussion started by: mlavanya
6 Replies
LEARN ABOUT DEBIAN
mrtg-rrd
MRTG-RRD(1) mrtg MRTG-RRD(1)NAME
mrtg-rrd - How to use RRDtool with MRTG
SYNOPSIS
After using MRTG for some time you may find some limitations, mostly in the areas of performance and graphing flexibility. These are
exactly the areas addressed by RRDtool. To learn more about RRDtool check out its website on
http://oss.oetiker.ch/rrdtool
RRDTOOL INTEGRATION
When using mrtg with RRDtool you are replacing rateup with the RRDtool perl module RRDs.pm. To enable RRDtool support in mrtg you have to
add the line
LogFormat: rrdtool
to your mrtg config file.
MRTG needs access to both the RRDtool perl module RRDs.pm and to the rrdtool executable.
If these two items are not installed in locations where perl can find them on its own, then you can use the following two parameters to
supply the appropriate directories.
For the location of the rrdtool executable you put
PathAdd: /usr/local/rrdtool/bin/
or
PathAdd: c:
rdtoolin
For the location of the perl module it would be:
LibAdd: /usr/local/rrdtool/lib/perl/
or
LibAdd: c:
rdtoolinlibperl
When you have made this modification to the configuration file, several things will happen when you run mrtg again with the new config
file:
1. mrtg will take all your old ".log" files and convert them to ".rrd" format. (The ".log" files don't get touched in the process, so if
things don't work out they are still there.)
2. mrtg will use rrdtool to update its databases. These will have a new format called rrd which is totally different than the native log
format of the classic mrtg.
3. mrtg will not create any webpages of graphs anymore. It will only query the routers for traffic information and update its rrd
databases.
The advantage of whole thing is that the mrtg will become much faster. Expect the runtime to drop to 20% of the previous value. (I would
like to get some feedback on this from folks with large installations.)
Mind you, though, while the logging process of RRDtool is very fast, you are also gaining some time by neither creating graphs nor updating
webpages. The idea behind this is that it is more efficient to create graphs and webpages on demand by using a cgi script.
At the moment there is no official script to do this, but two contributers have created such scripts:
One4All aka 14all.cgi
This was the first program to take over the webpage creation and graphing task. It has been developed by Rainer Bawidamann
rainer.bawidamann@web.de. You can find a copy on Rainers website: http://my14all.sourceforge.net/ The program comes with its own
documentation
routers2.cgi
This is another CGI frontend for mrtg running with rrdtool. The main difference between this and 14all is that the web pages it creates
are much more stylish than the ones from mrtg, plus they support User Defined summary graphs and different levels of Authentication and
Authorisation. This has been written by Steve Shipway (steve@steveshipway.org). You obtain a copy, and find a forum and demonstration
system at http://www.steveshipway.org/software/ The program comes with its own installation instructions and install script.
mrtg-rrd
The mrtg-rrd script is a CGI/FastCGI application by Jan "Yenya" Kasprzak for displaying MRTG graphs from data in the RRDtool format. It
is an intended replacement for the 14all.cgi script. It can make your monitoring system faster because MRTG does not have to generate
all the PNG files with graphs every 5 minutes or so. Instead of this the graphs are generated on-demand when the user wants to see
them. http://www.fi.muni.cz/~kas/mrtg-rrd/
FUTURE
Just as a side note: MRTG-3 will be based entirely on rrdtool technology. But don't wait for it ... get going now!
AUTHOR
Tobias Oetiker <tobi@oetiker.ch>
2.17.4 2012-01-12 MRTG-RRD(1)